code: def test_spec_path_joinpath(self):
      self.assertIsInstance(
          self.files / "a", CompatibilityFiles.OrphanPath
      )
  
imports: import io
  import unittest
  from importlib import resources
  from importlib.resources._adapters import CompatibilityFiles, wrap_spec
  from .None import util
label_desc: Use image node_id 3 for calling the CompatibilityFilesNoReaderTests obj's underlying member method code with example usage: obj.test_spec_path_joinpath() without return types